pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.79	IUPAC digitized pKa	0	-1	O=C(O)/C=C/Cl	O=C([O-])/C=C/Cl	mol1874	O=C(O)/C=C/Cl
3.72	AttenGpKa training set	0	-1	O=C(O)/C=C/Cl	O=C([O-])/C=C/Cl	mol1874	O=C(O)/C=C/Cl